A 45-year-old San Pedro man faces up to 10 years in federal prison for threatening over the phone to kill Rep. Maxine Waters. (AP file photo of Rep. Waters)

A San Pedro man is expected to plead guilty next week to threatening to kill Los Angeles Democratic Rep. Maxine Waters.

Anthony Scott Lloyd, 45, faces up to 10 years in federal prison on the single count of threatening a United States official, according to a plea agreement filed March 26. He is scheduled to enter his plea Monday before U.S. District Judge Stephen V. Wilson in downtown Los Angeles.

Lloyd made the threat during a phone call to Waters’ Capitol Hill office. He had become angered while listening to talk radio on Oct. 22 when he heard a report in which Waters made disparaging comments about President Donald J. Trump, according to court papers.

“If you continue to make threats toward the president, you’re going to wind up dead, Maxine, ’cause we’ll kill you,” Lloyd said in a voicemail, according to investigators.

He also used a racial slur to refer to Waters, and an anti-gay slur in the message, according to an affidavit.

A Waters staff member contacted the U.S. Capitol Police, which notified the FBI.

An FBI agent interviewed Lloyd, who lives with his grandmother, and he admitted leaving the voicemail but swore he had no intent to actually harm Waters, according to the affidavit.

Waters has been one of Trump’s most forceful critics on Capitol Hill.

Waters said in a statement in November that her district is “very diverse, and though we don’t always agree, my constituents would never threaten me. We are collectively focused on the progress, safety and security of our communities.”